noun a mechanism for changing gears on a bicycle, typically consisting of a chain, sprockets, and a mechanism to move the chain from one sprocket to another
Derailleurs play a crucial role in the functioning of bicycles and other transportation modes that use chain-driven gear systems.
In mechanical engineering, a derailleur is a type of gear-changing mechanism used in various applications.
Derailleurs are commonly used in outdoor sports such as mountain biking and road cycling to facilitate gear changes.
A derailleur is a mechanism that moves the chain from one sprocket to another on a bicycle, allowing for gear changes.
A writer may use the term 'derailleur' in a piece of writing about cycling or technology, describing how a derailleur is used to change gears on a bicycle.
A mechanic may use the term 'derailleur' when discussing the maintenance or repair of a bicycle, specifically focusing on the derailleur system.
A cycling coach may use the term 'derailleur' when teaching cyclists about gear shifting techniques and the importance of properly adjusting the derailleur.
A product designer may use the term 'derailleur' when designing a new bicycle model, considering the placement and functionality of the derailleur in the overall design.
A sports journalist may use the term 'derailleur' in an article about a cycling race, discussing how a mechanical issue with a derailleur affected a rider's performance.